I am getting data from a website using DOM. I've tested my code in my local server and it works perfectly however, when I uploaded it on a server and ran the code, the script I created returned html tags without any content. My code looks something like this:
$divs = $dom->getElementsByTagName('div');
foreach($divs as $div){
if($div->getAttribute('class') == "content1"){
$dom = new DOMDocument();
$dom->appendChild($dom->importNode($div, true));
$content1 = $dom->saveHTML();
echo "content:".$content1;
}
}
In my localhost, it returns something like so:
<div class="content1">This is my content</div>
However, in the server, I strangely get the empty html tags like so:
<div class="content1"></div>
What are possible causes of this problem? Is there any way I can fix it? Please advise.
PHP version under 5.3.6 :
create a variable that will contains a clone of the current node with all sub nodes,
append it as a child
echo the returned value.
foreach($divs as $div) {
if($div->getAttribute('class') == "content1"){
$dom = new DOMDocument();
$cloned = $div->cloneNode(TRUE);
$dom->appendChild($dom->importNode($cloned,TRUE));
$content1 = $dom->saveHTML();
echo "content:".$content1;
}
}
EDIT: I've made a mistake it was not
$cloned = $element->cloneNode(TRUE);
but
$cloned = $div->cloneNode(TRUE);
sorry ^^ (hope it will work)
Related
An api returns me couple of html code (only part of the body, not full html) and i want to change all images src's with others.
I get and set attributes then if i echo it in foreach loop i see old and new value but when i try to save it with saveHTML then dump the full html block which is returned from api, i don't see replaced paths.
$page = json_decode($page);
$page = (array) $page->rows;
$page = ($page[0]->_->content);
$dom = new \DOMDocument();
$dom->loadHTML($page);
$tag = $dom->getElementsByTagName('img');
foreach($tag as $t)
{
echo $t->getAttribute('src').'<br'>; //showing old src
$t->setAttribute('src', 'bla');
echo $t->getAttribute('src').'<br'>; //showing new src
}
$dom->saveHTML();
var_dump($page); //nothing is changed
My_ friend this is not how it works.
You should have your edited HTML in the result of saveHTML() so:
$editedHtml = $dom->saveHTML()
var_dump($editedHtml);
Now you should see your changed HTML.
Explanation is that $page is completely different object that has nothing to do with $dom object.
Cheers!
I know there are similar question, but, trying to study PHP I met this error and I want understand why this occurs.
<?php
$url = 'http://aice.anie.it/quotazione-lme-rame/';
echo "hello!\r\n";
$html = new DOMDocument();
#$html->loadHTML($url);
$xpath = new DOMXPath($html);
$nodelist = $xpath->query(".//*[#id='table33']/tbody/tr[2]/td[3]/b");
foreach ($nodelist as $n) {
echo $n->nodeValue . "\n";
}
?>
this prints just "hello!". I want to print the value extracted with the xpath, but the last echo doesn't do anything.
You have some errors in your code :
You try to get the table from the url http://aice.anie.it/quotazione-lme-rame/, but it's actually in an iframe located at http://www.aiceweb.it/it/frame_rame.asp, so get the iframe url directly.
You use the function loadHTML(), which load an HTML string. What you need is the loadHTMLFile function, which takes the link of an HTML document as a parameter (See http://www.php.net/manual/fr/domdocument.loadhtmlfile.php)
You assume there is a tbody element on the page but there is no one. So remove that from your query filter.
Working code :
$url = 'http://www.aiceweb.it/it/frame_rame.asp';
echo "hello!\r\n";
$html = new DOMDocument();
#$html->loadHTMLFile($url);
$xpath = new DOMXPath($html);
$nodelist = $xpath->query(".//*[#id='table33']/tr[2]/td[3]/b");
foreach ($nodelist as $n) {
echo $n->nodeValue . "\n";
}
’I have the following scenario and I'm already spending hours trying to handle it: I'm developing a Wordpress theme (hence PHP) and I want to check whether the content of a post (which is HTML) contains a tag with a certain id/class. If so, I want to extract it from the content and place it somewhere else.
Example: Let's say the text content of the Wordpress post is
<?php
/* $content actually comes from WP function get_the_content() */
$content = '<p>some text and so forth that I don\'t care about...</p> <div class="the-wanted-element"><p>I WANT THIS DIV!!!</p></div>';
?>
So how can I extract that div with the class (could also live with giving it an ID), output it (with tags and all that) in one place of the template, and output the rest (without the extracted tag, of course) in another place of the template?
I've already tried with the DOMDocument class, p.i.t.a. to me, maybe I'm too stupid.
Try:
$content = '<p>some text and so forth that I don\'t care about...</p> <div class="the-wanted-element"><p>I WANT THIS DIV!!!</p></div>';
$dom = new DomDocument;
$dom->loadHtml($content);
$xpath = new DomXpath($dom);
$contents = '';
foreach ($xpath->query('//div[#class="the-wanted-element"]') as $node) {
$contents = $dom->saveXml($node);
break;
}
echo $contents;
How to get the remaining xml/html:
$content = '<p>some text and so forth that I don\'t care about...</p> <div class="the-wanted-element"><p>I WANT THIS DIV!!!</p></div>';
$dom = new DomDocument;
$dom->loadHtml($content);
$xpath = new DomXpath($dom);
foreach ($xpath->query('//div[#class="the-wanted-element"]') as $node) {
$node->parentNode->removeChild($node);
break;
}
$contents = '';
foreach ($xpath->query('//body/*') as $node) {
$contents .= $dom->saveXml($node);
}
echo $contents;
I'm attempting to make a script that only echos the div that encolose the image on google.
$url = "http://www.google.com/";
$page = file($url);
foreach($page as $theArray) {
echo $theArray;
}
The problem is this echos the whole page.
I want to echo only the part between the <div id="lga"> and the next closest </div>
Note: I have tried using if's but it wasn't working so I deleted them
Thanks
Use the built-in DOM methods:
<?php
$page = file_get_contents("http://www.google.com");
$domd = new DOMDocument();
libxml_use_internal_errors(true);
$domd->loadHTML($page);
libxml_use_internal_errors(false);
$domx = new DOMXPath($domd);
$lga = $domx->query("//*[#id='lga']")->item(0);
$domd2 = new DOMDocument();
$domd2->appendChild($domd2->importNode($lga, true));
echo $domd2->saveHTML();
In order to do this you need to parse the DOM and then get the ID you are looking for. Check out a parsing library like this http://simplehtmldom.sourceforge.net/manual.htm
After feeding your html document into the parser you could call something like:
$html = str_get_html($page);
$element = $html->find('div[id=lga]');
echo $element->plaintext;
That, I think, would be your quickest and easiest solution.
I'm having trouble trying to write an if statement for the DOM that will check if $html is blank. However, whenever the HTML page does end up blank, it just removes everything that would be below DOM (including what I had to check if it was blank).
$html = file_get_contents("http://example.com/");
$dom = new DOMDocument;
#$dom->loadHTML($html);
$links = $dom->getElementById('dividhere')->getElementsByTagName('img');
foreach ($links as $link)
{
echo $link->getAttribute('src');
}
All this does is grab an image URL in the specified div, which works perfectly until the page is a blank HTML page.
I've tried using SimpleHTMLDOM, which didn't work either (it didn't even fetch the image on working pages). Did I happen to miss something with this one or am I just missing something in both?
include_once('simple_html_dom.php')
$html = file_get_html("http://example.com/");
foreach($html->find('div[id="dividhere"]') as $div)
{
if(empty($div->src))
{
continue;
}
echo $div->src;
}
Get rid on the $html variable and just load the file into $dom by doing #$dom->loadHTMLFile("http://example.com/");, then have an if statement below that to check if $dom is empty.